Name______Date______Period______

Gummi Bears Activity Worksheet

Question

What will happen to a gummi bear when you put it in water overnight?

Prelab question

What information or prior experiences can you use to make a prediction?

Record your prediction and state your reasoning.

Materials

·  3 oz. clear, plastic cup

·  1 gummi bear

·  Centimeter ruler

·  Triple beam balance

·  Graduated cylinder

·  25 mL distilled water

·  Permanent marker

·  Strainer

·  2 paper towels

·  Small plastic cups

Procedure

1.  Label your plastic cup with your table name and class period

2.  Use the ruler to find the length of your gummi bear. Measure from the top of the bear’s head to the bottom of its feet to the nearest 0.1 cm. Record in the data table below.

3.  Measure the width of your gummi bear at the widest point across the back of the bear to the widest point across the back of the bear to the nearest 0.1 cm. Record in the data table below.

4.  Measure the height of your gummi bear by laying it on its back and measuring from the heel of the foot to the tip of the toes to the nearest .1 cm. Record in the data table below.

5.  Calculate the approximate volume of the bear by multiplying length x width x height (LxWxH). Round to the nearest 0.01 cm and record in the data table below.

Gummi bear mass

1.  Find the mass of your plastic cup

2.  Place the bear in the plastic cup. Find the mass of the gummi bear and cup. Remember to subtract the mass of the cup to find the mass of the gummi bear. Record in the data table below.

3.  Add 25 mL of water to the cup and allow to sit overnight.

4.  On Day 2, have the teacher strain the gummi bear from the water. Place the gummi bear on a paper towel.

5.  Dry the inside of the plastic cup.

6.  Fill out the data table below.

Analysis questions

1.  How did the volume change? Be sure to discuss the before and after soaking data in your response.

2.  Use math to determine the change in volume to the bear after soaking. Show your work.

3.  How did the mass change?

4.  Use math to determine the bear’s change in mass after soaking. Show your work.

5.  How do the results compare to your prediction?

6.  Why do you think the bear reacted to the water the way it did?

7.  Predict how the gummi bear would react to being submerged in other liquids.

Descriptive observations / Length in cm / Width in cm / Height in cm / Approximate volume (LxWxH) / Mass of gummi bear in grams
Before Soaking
After Soaking